Chengdu, CHINA:  Workers clean a ying and yang symbol upon the closing ceremony of the second China Taoism Culture festival in Chengdu, China's southwestern province of Sichuan, 29 August 2006. The ancient chinese art of tai chi chuan is believed to have many health benefits and and can also be used for self defense.       AFP PHOTO/ LIU Jin  (Photo credit should read LIU JIN/AFP/Getty Images)